PLEASE HELP ME I WILL MAKE THE BRAINLIEST Jesse is building a treehouse and needs to purchase nails. The packs of nails come in 6 pounds each. Jesse purchased 12 pounds of nails to build her treehouse. She used 3 ⅔ pounds to build the walls and 4 ⅚ pounds to put the floors together.

a) How many pounds of nails does she have left after putting together the walls and floors?

b) Jesse decided she wants to build a picnic table to keep inside the treehouse. In order to complete the table, she realizes she will need 6 pounds of nails. Does she have enough nails left after building the walls and floors? If yes, justify your answer. If no, how many more packs of nails does she need to purchase to complete the table?